Dead"head` (?), n. 1. One who receives free tickets for theaters, public conveyances, etc. [Colloq. U. S.]

2. (Naut.) A buoy. See under Dead, a.

• A person either admitted to a theatrical or musical performance without charge, or paid to attend
  
• A person such as a pilot travelling on an ariline flight as a passenger for free, for example to return home or travel to their next assignment
       2002: Are you my deadhead to Miami? — Catch Me If You Can, Steven Spielberg
  
• A train or truck moved between cities with no passengers or freight, in order to make it available for service
  
• To travel on an airline as a deadhead (non-paying passenger).
  
• To remove spent or dead blossoms from a plant.
       If you deadhead your roses regularly, they will bloom all season.
  
• A fan of the rock band the Grateful Dead